Found a bug (calculating the width of the slider fill)

Found a bug (calculating the width of the slider fill)

Hi everybody!

Since I got this plugin successfully working with Architect, I played a bit with my new cool little slider and noticed that there are some errors in calculating the width of the filling element in some cases.
If you are not dragging the slider but directly selecting a point on the slider, which is at the other end of the slider (so the distance between start and end is big enough) you will recognize that in some cases the filing element is to big or to small.
I added a picture for better understanding it.